Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WP4YF callsign genealogy
Currently held by ACOSTA FREYTES, CARLOS E
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by WP4YF's current licensee, walking backwards.
- WP4HYLno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WP4YF.
No current licensee on record previously held this callsign.